On this date in 1755, Henri Mongeot was broken on the wheel for assassinating the husband of his adulterous lover, Marie.

Louis Alexandre Lescombat was a Paris architect; the betrayal of his flighty wife Marie Catherine Taperet was all the talk of Paris after her lover Mongeot slew the husband whilst out on a walk in December of 1754 — then summoned the watch to present a bogus self-defense claim.

For the widow, one good betrayal would deserve another: Mongeot faithfully avoided implicating her in the murder but when he discovered on the very eve of his death that she was already making time with a new fellow, he summoned the judge and revenged himself by exposing her incitement to the crime. His evidence would doom her to follow him many months later, after the sentence was suspended long enough for the widow Lescombat to deliver a son.

Joining Mongeot on the scaffold this date was a 15-year-old heir to the family executioner business apparently conducting just his second such sentence — Charles-Henri Sanson, the famed bourreau destined in time to cut off the head of the king and queen. Mongeot makes a passing appearance in the 19th century Memoirs of the Sansons; in it, Charles-Henri’s grandson remarks from the family notes that “Mdme. Lescombat … was confronted with him [i.e., her doomed lover] at the foot of the scaffold. She was remarkably handsome, and she tried the effect of her charms on her judges, but without avail.”